Over running clutch

This forum is for the Fordson New Major, including the Super Major and the Power Major.
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leeroy
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Over running clutch

Post by leeroy »

To run a rotary mower with single stage clutch on FMD is it necessary to use one?
Will only be cutting light brush under an inch with a light 5' mower. The mower does not have any clutch on it either.
1939 Ford 9N, 1952 8N, 1955 FMD, IH 340U, Ford 3600, Ford 2120, Valmet 646 Forwarder.

Billy26F5
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Re: Over running clutch

Post by Billy26F5 »

You're probably ok without it but I think it will be worth having one in in the long run. I don't think having a live clutch or not will make a difference to this.
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John b
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Re: Over running clutch

Post by John b »

The problem with a single blade mower on a Major is having to have the pto engaged to use the hydraulics, at low revs the mower acts as a flywheel and tends to 'overtake' the engine causing it to hunt and without an over-run clutch on the pto it will break the shear bolt in the pto shaft, if a shaft with a shear bolt is fitted. Not a safety issue but a pain in the hoop when you have to keep stopping to replace shear bolts!
My biggest fear is that when i die my wife will sell my tractors for what i told her they cost

leeroy
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Re: Over running clutch

Post by leeroy »

Thanks guys. I know there is one (or two) around. I'll dig around till I find it.
1939 Ford 9N, 1952 8N, 1955 FMD, IH 340U, Ford 3600, Ford 2120, Valmet 646 Forwarder.

Old Hywel
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Re: Over running clutch

Post by Old Hywel »

While your combination may work well, there’s always the possibility of problems should you need to stop suddenly. With the mower acting as a large flywheel, dipping the clutch won’t stop forward travel and you could easily find yourself halfway over a hedge or through a wall before all motion ceases.

Emiel
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Re: Over running clutch

Post by Emiel »

Old Hywel wrote:
Tue Mar 22, 2022 9:52 am
While your combination may work well, there’s always the possibility of problems should you need to stop suddenly. With the mower acting as a large flywheel, dipping the clutch won’t stop forward travel and you could easily find yourself halfway over a hedge or through a wall before all motion ceases.
Exactly this. Without over running clutch it is a extremely dangerous setup.
Best regards

Emiel

N 1937, E27N 1948, 8N 1949, E27N 1950, E1A Diesel 1953, E1ADKN PP 1956, Dexta 1959, NH Clayson M103 1964

fenhayman
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Re: Over running clutch

Post by fenhayman »

For emergency stop , open, then close throttle, depress clutch and simultaneously pull out of gear. Done it hundreds of times with balers, slashers and mowers.

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